O Quit Week & Lechare Vlees X 1808 1:2 Final Fa.. L Margin et Error Co. Easy Confidence . D Question 9 0.5 pts A sample of size of n is selected from a population with the population proportion p gives x successes. Construct a confidence interval for the population proportion. The sample proportion is p = n x x. The interval is p + zg (1-2), where p = O The interval is p + zavn p (1 -p), where p = =. O The interval is a + za- i Vn The standard error of the sample proportion is p(1 - p)